DETROIT DIESEL 53
Exhaust Valves 1.2.2
Fig. 16 - Checking Valve Opening Pressure
with Gage WRE-500-60
Release the tool and install the valve locks on the remaining exhaust valves in the same manner.
Check the position of the exhaust valve (Fig. II).
10. With the exhaust valves installed in the cylinder head, use spring checking gage WRE -500-60 and note the gage
reading the moment the exhaust valve starts to open (Fig. 16). The minimum pressure required to start to open the
exhaust valve must not be less than 25 pounds for a four valve cylinder head.
11. Install the injectors, rocker arms, shafts, brackets and any other parts that were previously removed from the
12. Install the cylinder head. Refer to Pre-Installation Inspection and Install Cylinder Head in Section 1.2.
13. Perform a complete engine tune-up.